This may be the last of London's wooden pavements, which were once a common sight in the city.

A hands-off space for graffiti artists to hone and display their skills.

Hidden beneath the streets of London is a secret subway that only carried mail.

England's most famous front door has an accidental doppelganger.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

An unsanctioned shrine that sprung up outside the late singer's home is causing a stir in London's Highgate neighborhood.

Behind one of the world's most impenetrable vaults is a massive collection of retail silver.

A network of concealed passageways lies within a busy London Underground station.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

A steep and winding road in the Yorkshire Dales passes by these deep natural potholes.

Legend has it the famous Robin Hood would attend mass at this 12th-century Cistercian abbey in Sherwood Forrest.

A gardener saved a beloved clock face from destruction by building it into a wall outside his house.

These quintessentially English stepping stones were built for Victorian tourists.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

These legendary stone steps were once used to haul coffins up the rockface.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.